298 



OH THE SENSOET CANAL SYSTEM OF FISHES. [Apr. 2, 



4. CoLLiKGE, "Walter E. — " Soine Eesearches upon the Sensory- 

 Canal Sj'stem of Ganoids." Proc. Birmingham N. H. & Phil. 

 Soc. 1895, vol. ix. pp. 77-81. 



5. Htetl, J. — " Ueber den Seitencanal von Lota" Sitzungsb. d. 

 k. Akad. d. W., Math.-naturw. CI. 1866, Bd. i. pp. 551-557, 

 l,pl. 



6. Letdig, P. — "TJeber die Schleimkanale der Knochenfische." 



Arch. f. Anat. und Phys. 1850, pp. 170-181, Taf. iv. 



7. Letdig, p. — " Neue Beitrage zur anatomischen Kenntniss der 

 Hautdecke und Hautsinnesorgane der Pische." Pestschrift d. 

 Naturf. Ges. zu Halle, 1879, pp. 1-58, Taf. vii.-x. 



8. Letdig, P. — ' Zur Kenntniss der Hautdecke und Mund- 

 schleimhaut tadischer Cyprinoiden.' Bonn, 1883, pp. 1-28, 

 T. 1-11. 



9. n'OoNNELL, E. — " On the System of the Lateral Line in 

 Pishes." Trans. Eoy. Irish Acad. 1862, vol. xxix. pp. 161- 

 187, pis. iv.-vi. 



10. McMrRRiCH, J. P. — " The Osteology of Amiurus catns (L.), 



Gill." Proc. Canadian Inst. 1884, vol. ii. X. S, pp. 270-310, 

 pi. ii. 



11. Pollard, H. B. — "The Lateral Line System in Siluroids." 

 Zool. Jahrb.' 1892, pp. 525-550, pis. xxxv., xxxvi. 



12. "Weight, E. Eamsat. — " On the Skin and Cutaneous Sense- 



organs of Amiurus." Proc. Canadian Inst., 1884, vol. ii. N. S. 

 pp. 251-269, part of pi. 1. 



13. AVeight, E. Eamsat. — " On the Kervous System and Sense- 



organs of Amiunis." Ibid. pp. 352-386, pis. i., iv.-vi. 



EXPLAl!fATION OF PLATES XVIII.-XXI. 



Fig. 1. Diagrammatic -view of the bead of CJarias, illustrating the distribution 

 of the sensory canal system of the bead and the nerves innervating their 

 sense-organs. The canals and branches are coloured yellow, the tri- 

 geminal nerve blue, and the facial red. 



Lettering. 



c.b. Canal-bone. 

 /. Frontal. 

 F.com. Frontal commissure. 

 hi/om. Hyomandibular. 

 I. Vagi laterahs. 

 v. Anterior branch of vagi later- 

 alis. 

 L.C. Lateral canal. 



m. Mandible. 

 M.C. Main canal. 

 7n.l>t. Metapterygoid. 

 Oc.cc/m. Occipital commissure. 

 op. Operculum. 

 Op.-Mn. Operculo-mandibular branch 

 of main sensory canal. 

 or. Orbit. 

 f.op. Preoperculum. 

 qu. Quadrate. 

 r.b. Ramus buccalis. 



r.hm. Ramus hyomandibularis. 

 r.hy. Ramus hyoideus. 

 r.m. Ramus maxillaris. 

 r.mn. Ramus mandibularis (tri- 

 geminal). 

 Ramus mandibularis (fecial). 

 Ramus ophthalmicus pro- 

 fundus. 

 Ramus ophthalmicus super- 



ficialis. 

 Ramus oticus. 

 Sub-operculum. 

 Sub-orbital branch of main 



sensor}' canal. 

 Supra-orbital branch of 

 main sensory canal. 

 V.gl. Vagus ganglion. 

 Vg, Vagus. 



r.m. 

 r.o.p. 



r.ot. 

 s.op. 

 S.or. 



Sp.o. 



